Risk factors for HCV infection among blood donors confirmed to be positive for the presence of HCV RNA and not reactive for the presence of anti‐HCV

BACKGROUND: In 1999, NAT of blood donations was implemented to detect “window‐period” infections. Blood donors who have confirmed NAT results positive for the presence of HCV in the absence of anti‐HCV are likely to have been recently infected. Of over 26.8 million donations tested between March 3, 1999, and March 31, 2003, 810 were HCV‐reactive by NAT. A subset of these donors was assessed for recent exposure risk.

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